Spool



March M, 1933. c. K. DUNLAP SPOOL Filed May 8, 1932 Patented Mar. 14, 1933 UNITED STATES PATENT OFFICE CHARLES K. DUNLAP, OF ARTSVILLE, SOUTH GAROIJNA, VASSIGNOR To soNo'co y PRODUCTS COMPANY,;OF HABTSVILLE, SOUTH CAROLINA, A GORPOBATION OF SOUTH CAROLINA SPOOL Application filed May 18,

This invention relates to spools adapted for use in supporting thread packages in the textile industry, and particularly to spools designed and intended for use 1I 1 supporting and carrying packages of Sllk or ra on thread.,

any types of spools suitable for use as cores or supporting bodies for thread packages have heretofore been designed Or suggested and have been placed in actual use.

Progress in the textile industry, however, has rendered large numbers of types of spools heretofore found useful obsolete for Various reasons. The spool which comprises the present invention was developed to supply the advanced needs of the industry, particularly those throwsters, knitters, Or weavers Who deal with silk and rayon threads, with an inexpensive, light-welght, Simple, and moisture-proof spool'which, when operatively positioned upon a creel, will rotate with a minimum of frictional loss.

A spool constructed in accordance with the present invention is rugged and durable, being practically unbreakable, will not distort when subjected to moisture l aden atmospheres, will not rust in any material or important part and may be manufactured of Such relative y ineX ensve materials that it need only be used ut once and thereafter discarded. p

One embodiment of the invention, selected for disclosure by way of example, is illustrated in the accompanying drawing, -in which:

Figure 1 is a perspective view of the completed spool; and

Figure 2 is an axial section therethrough.

The spool comprises, as do all spools of this type, three principal-portions, the tubular body indicated at 10 and the two heads indicated at 11, 11. The heads are positioned at the ends of the body and are con- Centric therewith, as is usual practice, and means is provided for securing each head to the adjacent end of the body. I prefer to form the tubular body of paper, a suitable Strip or sheet of paper being Wound upon itself, by means of the mandrel, to form a tube at least several plies in thickness, the several 1932. `Seria1 No. 612,111.

convolutions of Which are secured together by a suitable adhesive. A wat-erproof 'cement or adhesive is preferably employed, and the paper tube after Completion may be otherwise treated, if desired, to increase its resistance to the penetration of-moisture and thereby obviate any liability to distortion due to swelling of the paper. 4 l

The spool heads or end discs are also preferably formed of paper, and, in the Original fabrication of these members, a plurality of sheets of paper, such as kraft paper, may be superposed one upon the other and thereafter formed into a single unit by heavy pressure. Following the application of heavy pressure, the discs th'us formed are preferably coated with a waterproofing and strengthening m'aterial Such as bakelite. This coating prevents penetration of moisture into the fibers of the paper and thereby eliminates the possibility of subsequent distortion due to swell'ing of the fibers, at the same time imparting increased smoothness and mechanical strength SO that the discs as secured in'position have ample strength for the V purpose intended, being well able to resist shocks incident to transportaton and rough handling;` y

In forming the spool heads, it is preferred that each of them shall have a peripheral bead 11' upon one face and a groove 11' formed in the opposit face, into Which groove the end of the tubular body 10 may project. The means for securing the body and heads to ether Will now be described.

ecured within each end of the tubular body 10 is a wooden'plug 12, such plug being preferably provided with external threads 13 so that it maybe inserted by a turning operation and cannot be thereafter longitudinally pulled out, the threads 13 biting into the inner layer of the'paper tube 10. If -de- Sired, adhesive may also be employed to secure a firm bonding of the external surface of each plug with the inner surface of the tube.

Each plug is also centrally perforated or apertured, such aperture being referably cylindrical and having, intermediate its ends, a. shoulder 14 facing inwardly. The cylindrical apert'ure in each plug registers with the cylindrical aXial aperture of the associated disc when these members are roperly assembled, 'and extending through t ese registering apertures is a metallic e `elet 15 referably fabricated of cop r. ncircling the projecting end of eac eyelet 15 is a washer 16 of steel or like material. The ends of the eyelet are upset or headed over as shovn, tge upset portlons engaging, respective y, t ev shoulder 14 and the washer 16. A number of nails or like members are indicated at 17. These nails extend thrgugh the end dscs and into the adjacent plugs. They serve as additional means for securing the end discs to the plugs and also performthe function of preventing relative rotation of the plugs and heads 11, which relative rotation is not resisted by the eyelets 15. The heads of the nails are covered by the washers 16.

The various arts just described may be assembled in di erent ways, but I referably assemble the plugs, heads, and securing means into units in preliminary operations and thereafter insert the plugs in the ends of the tubular body. The assembly of each plug, end disc, and securing means can be rapidly effected by means of suitable machines, and the assembly of these completed units with the tubular body can obviously be quickly and easily accomplished. The completed spool is composed, for the most part, of paper, and the paper parts have great strength and are, at the same time, light in weight and cost very little. The metallie parts are comparatively few in number, light in weight, and low in cost.

Whi1e I prefer to fabricate the s ool exactl -as shown in the drawing an as above described, minor changes in the design and arrangement of its Component arts may he made without departure from t e Spirit and scope of 'the invention.

Having thus described the invention, what is claimed as new and desired to be Secured by Letters Patent is:

1. In a spool of the t pe described, in combination, a cylindrical ody, plugs secured in the ends of said body, Said plugs being centrally apertured, disc-like heads at the ends of said body and Centered on the axis thereof, said heads being axially perforated, eyelets projecting through the registering apertures of the plugs and heads respectively to secure the heads to the plugs, and a plurality of securin members disposed around each eye let, eac such member being positioned in part in the associated plug and in part in the adjacent head, thus preventing relative rotation of the head and plug.

2. In a spool, a cylindrical paper body, a disc-like paper head at the end of the body and arranged concentrically thereto, said head having a cylindrical axial aperture, and means for securing the head to the body comprising a wooden plug secured within the end portion of the body, said plug having Signature.

` CHARLES K. DUNLAP. 

